org.iids.aos.util
Class Mutex

java.lang.Object
  org.iids.aos.util.Mutex

public class Mutex
extends java.lang.Object

Utility class: mutex

Constructor Summary

Mutex()
Constructs a new Mutex object.

Method Summary

void	acquire() Acquire the lock.
boolean	locked() Returns true if this mutex has been been locked.
void	release() Release the lock.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Mutex

public Mutex()

Constructs a new Mutex object.

Method Detail

acquire

public void acquire()
             throws java.lang.InterruptedException

Acquire the lock. This method blocks until the lock is acquired. The method is interruptible. The lock is NOT re-entrant, that is, you cannot acquire the lock twice, not even the same thread.

Throws:

java.lang.InterruptedException - The lock has not been acquired.

release

public void release()

Release the lock. This method releases the lock and wakes up a thread waiting to acquire the lock. The order in which the lock-requests will be granted is unspecified. The caller must have acquired the lock before.

locked

public boolean locked()

Returns true if this mutex has been been locked.

Returns:

true if mutex has been locked.